Nitrogen fertilization increased grain yield significantly.

施氮后籽粒产量极显著增加。

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Some measures have been pointed for the increase of grain yield and quality of wheat.

同时还提出了根外施用微肥来提高产量、改善籽粒品质的具体措施。

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If the grain yield falls to 72 million tons, the lower end of the union's forecast, then Russian grain exports may tumble to 11 million tons in the current marketing year, which starts July 1, union head Arkady Zlochevsky said.

WSJ: Russia Plagued by Forest Fires, Wilting Grain

"Given that global and U.S. grain inventories remain very tight, grain prices will continue to reflect growing conditions and yield potential for both U.S. and global crop production, " Agrium said, citing a June report from the U.S. Department of Agriculture, which anticipates global grain and oilseed stockpiles to scrape 35-year lows through 2009.

FORBES: Agrium Cropping Up A Strong Year

The green revolution, which spread enabling technologies of high-yield agriculture across the planet, resulted in doubling of grain production.

FORBES: Thomas Malthus: Wrong Yesterday, Right Today?